Julian Hibberd has published an In Retrospect article in Nature

In 1966, fifty years ago, a new photosynthetic pathway was discovered by Hal Hatch and Roger Slack. The impact has been large - it not only influenced the thinking of biochemists, but also of cell, molecular and developmental biologists, geneticists, ecologists and even geologists and anthropologists. Julian documents the discovery of this new photosynthetic pathway, and the wide–ranging impacts that it then had.